<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .left_img{
            width:10px;
            height:100px;
            background: url("file/简单滑动门/l.png") no-repeat;
            float:left;
        }
        .middle_img{
            height:100px;
            background: url("file/简单滑动门/m.png") repeat-x;
            float:left;
            line-height: 100px;
        }
        .right_img{
            width:10px;
            height:100px;
            background: url("file/简单滑动门/r.png") no-repeat;
            float:left;
        }
    </style>
</head>
<body>
   <div class="left_img"></div>
   <div class="middle_img">
    dsadsddadadasdsadDSDSDSDSDSDSD
   </div>
   <div class="right_img"></div>
</body>
</html>